compression numbers

aj.hudson · Post by **aj.hudson** » Fri Mar 09, 2012 1:14 am

Got a blacktop, importer has video of it making around 180psi I know he has dumped ATF in the cyls. I got the motor days later and immediately did a compression test. While doing a compression test I am getting readings of around 120psi not sure how much atf still in cylinders but it's there...
These are all on a cold motor uninstalled.. Manual states good is above 193 and min is 156...
Should I expect the compression to rise to an acceptable level when "warm"?
Or should I not risk installing it (mr2 so not fun) and just re ring it?

Post by **dr.occa** » Fri Mar 09, 2012 9:47 am

Pull the pistons and check the cylinders for out of round conditions. If all is well, new bearings and rings.

aj.hudson · Post by **aj.hudson** » Mon Mar 12, 2012 1:17 am

Did a leak down test and it failed... Plugged the exhaust ports where it was leaking past the valves and it failed a bit less but still failed... Rings are done. Bores look good though...oem Std rings on order..

Post by **dr.occa** » Mon Mar 12, 2012 8:37 am

Lap the valves too.

aj.hudson · Post by **aj.hudson** » Mon Mar 12, 2012 12:14 pm

Yep. Got the full gasket set. Gonna have day customs do the rebuild.

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